The effect of smoking hash can differ from the parent plant, as the heads of the stalked glands may contain more THC in comparison to the side chemicals than the stalks and the tissues of the plant. Hash made only from the heads of the stalked glands is very potent, and can create an uplifting high similar to a vaporizer hit, though deeper and more persistent. As more stalks are added to the hash, the character of the high changes in various ways, though typically good hash has a strong initial rush and a mild, soft letdown. I have found that the varietal character of the parent plants is diminished in hash. The cystolith and hair trichomes add nothing to the high, but may add to the flavor. Essential oils are distributed throughout the plant, making up about 10% of the stalked glands by weight. The essential oil content of the contaminants is apparently not known.Hashish Addiction